This week in the biogerontology blogosphere

At Longevity Meme, Reason reviews recent evidence that calorie restriction can be beneficial even if it starts late in life. Rather than preventing damage (which has already occurred by the time you’re old), low-energy diets may actually stimulate cellular regeneration in older animals.

At Partial Immortalization, Attila Csordás takes on a novel concept in stem cell biology: “potential stem cells.” These cells are the ones that repopulate the niche during regeneration or after organ transplantation, and according to the authors of the article under discussion, they are distinct from the “actual stem cells” responsible for tissue homeostasis and regular maintenance

And finally, a piece of speculative fiction at News of Future, in which a reporter in the year 2035 addresses the controversy regarding the effectiveness of anti-aging drugs.